Originating in ancient Greece, mimes (or pantomimes) are people who act out a story by moving their body. This is done without the use of speech, so in a way, it is similar to interpretive dance.
Some popular miming actions are rope-climbing, "trapped in the box", the invisible wall, and leaning on air.

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A form of art, similar to Unmade Bed by Tracy Emin. However, Tracy gets paid shedloads for her shite, whereas mime artists are rightly shunned.

On the Discworld, there is a city called Ankh-Morpork which is free from mime artists. They are chained over the scorpion pit, upside down, with the ever-helpful phrase "Learn Thee Words" emblazoned across the walls.